CATEngine Parts

120-0140 Hydraulic Piston Pump — Cat 3056E 3116

This is a CAT Hydraulic Piston Pump, a high-performance component that converts mechanical energy into hydraulic power with high efficiency. Manufactured to meet rigorous OEM specifications, it ensures precise control and robust operation, outperforming worn or damaged units. Operators may observe a loss of hydraulic pressure, erratic operation of implements, or a complete lack of hydraulic response when this pump fails.

Hydraulic Piston Pump – Part No 120-0140 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeHydraulic Piston Pump
MaterialAluminum alloy, steel, and seals
ApplicationMain hydraulic system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing hydraulic piston pump may initially manifest as a decrease in the speed and power of hydraulic functions, particularly under load. If the problem persists, the pump might begin to whine or groan, and hydraulic system temperatures can increase due to internal leakage. Continued operation risks a total loss of hydraulic power, leading to equipment immobilization and potential damage to other hydraulic system components.

Installation Tip

Thoroughly clean the pump mounting surface and drive shaft to ensure proper seating and prevent seal damage. Avoid forcing the pump onto the drive; ensure perfect alignment to prevent damage to the shaft or coupling.

Service Note

When replacing a hydraulic piston pump, always replace the hydraulic filter element and inspect the hydraulic fluid for any signs of contamination or degradation.